In the fanfiction, Harry's internal thoughts might reveal his lack of trust. He could be constantly doubting the motives of adults. When an adult offers advice or assistance, his inner monologue might be full of suspicion, like 'What does he really want?'
Often through his interactions. He might be hesitant to confide in adults or be very guarded when around them. For example, he may avoid eye contact or give short, evasive answers when an adult tries to talk to him.
One possible reason could be his past experiences. Maybe he has been betrayed before in the wizarding world. For example, if he had been let down by so - called friends or allies who turned out to have ulterior motives. Another factor might be the general atmosphere of secrecy and intrigue in the magical community. Everyone seems to be hiding something, and Harry, being constantly in the middle of dangerous situations, has learned to be cautious and not trust easily.
In the fanfiction, Harry's lack of trust could lead to a lot of misunderstandings. His friends may misinterpret his caution as a lack of care for them. It could also isolate him. People might start to avoid him if they feel he is always doubting them. This isolation could then further fuel his lack of trust as he has fewer positive interactions with others, creating a downward spiral in his relationships.
His relationships would become very strained. Friends might feel hurt that he doesn't trust them, which could lead to arguments and distance. For instance, Hermione might be constantly trying to prove herself to him, but he still remains skeptical.
One possible reason could be past betrayals. Maybe he was let down by his friends or family in the fanfiction's storyline. For example, if someone he trusted shared his secrets with the wrong people, it would make him hesitant to trust anyone again.
It might start with small incidents. For example, Ron being late to meet Harry a few times without a proper explanation. This can plant the seeds of doubt in Harry's mind.
His lack of trust would surely strain his friendships. His friends might feel hurt and rejected by his constant suspicion. For example, Hermione, who has always been loyal to him, might be deeply disappointed if Harry doesn't trust her.
Another reason could be personal insecurities on Harry's part. Harry has been through a lot and might be over - analyzing Ron's behavior. He could be projecting his own fears onto Ron. For example, if Harry is worried about being betrayed again like he was by some people in the past, he might start to doubt Ron even without solid evidence.
Maybe in the fanfiction, Harry has had bad experiences with adults. For example, some adults in the story might have betrayed his trust in the past, so he becomes wary of all adults.
Often, he might ignore her attempts to get his attention. For instance, in some fanfics, Sakura tries to talk to Naruto about something important, but he brushes her off like she's not important.
It would strain their relationship a great deal. Naruto might avoid Kakashi, not seek his advice or training as he used to. This could lead to Naruto making more mistakes in his development as a ninja because Kakashi has a lot of knowledge and experience to offer.